What is the enum keyword used for in C?

What is the enum keyword used for in C?

• A. To define a function prototype
• B. To define a user-defined data type that consists of integral constants
• C. To declare an array
• D. To create a loop construct

Answer: (B)

The enum keyword in C is utilized to define a user-defined data type that consists of integral constants. When you declare an enumeration using the enum keyword, you create a named type that allows you to define a set of named integral constants, improving the readability and maintainability of your code. For instance, if you have specific values that represent different states or categories, using an enumeration helps make your code clearer by assigning meaningful names to those values. Here's an example: ```c enum Days { Sunday, Monday, Tuesday, Wednesday, Thursday, Friday, Saturday }; ``` In this case, each day of the week is associated with a unique integer value, starting from 0 for Sunday up to 6 for Saturday. By using enums, you can refer to the days of the week using descriptive names instead, avoiding the potential confusion of using raw integer values. This approach enhances the clarity of the code, making it easier for others (or yourself in the future) to understand its intention and purpose. Overall, enums are a powerful feature in C that enable programmers to create a set of related constants bound together under a single type, which can then be used as variable types, enhancing type safety and code clarity.

The enum keyword in C is utilized to define a user-defined data type that consists of integral constants. When you declare an enumeration using the enum keyword, you create a named type that allows you to define a set of named integral constants, improving the readability and maintainability of your code.

For instance, if you have specific values that represent different states or categories, using an enumeration helps make your code clearer by assigning meaningful names to those values. Here's an example:

enum Days { Sunday, Monday, Tuesday, Wednesday, Thursday, Friday, Saturday };

In this case, each day of the week is associated with a unique integer value, starting from 0 for Sunday up to 6 for Saturday. By using enums, you can refer to the days of the week using descriptive names instead, avoiding the potential confusion of using raw integer values. This approach enhances the clarity of the code, making it easier for others (or yourself in the future) to understand its intention and purpose.

Overall, enums are a powerful feature in C that enable programmers to create a set of related constants bound together under a single type, which can then be used as variable types, enhancing type safety and code clarity.